Perfect Circuit SystemsRhythm Series Intermediate System


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Perfect Circuit Rhythm Series Intermediate System

Perfect Circuit’s Rhythm Series Intermediate is a Eurorack system for the creation of rhythmically-driven music featuring progressive sound generation techniques. Built in a Make Noise powered skiff with room to expand, this system is capable of repetitive dance grooves, sputtery glitch patterns, and far more.

Built around several extremely flexible sound sources, this system sounds like no other drum machine before it. Noise Engineering’s Basimilus Iteritas Alter additive synth voice excels at percussion sounds, but is easily capable of working as a melodic or bassline voice. With clever modulation, it can switch from deep kicks to crisp hats to slippery leads at a moment’s notice. The WMD Chimera uses a specialized granular synthesis algorithm to create metallic percussion sounds, great for industrial noise, clanging metal snares, and the sound of chains being dragged along the ground. Intellijel’s Plonk is a physical modelling synth voice, capable of everything from pitched percussion and bowed strings to drum sounds and peculiar, impossible soundscapes. It particularly excels at percussive sounds, and offers dynamic preset recall and randomization that allows it to produce a wide variety of sounds even over a short amount of time. And of course, the trusted Erica Pico Drums is a two-voice one-shot sample player, preloaded with many high-quality percussion sounds. The Pittsburgh Lifeforms 2+2 acts as a flexible audio mixer to combine the system’s sounds, and the Erica Synths Pico Out allows easy connection to headphones, audio interface, and more.

The system’s rhythmic backbone is a Malekko Varigate 4+, which allows for four channels of probability-based gate or note sequencing. Offering several options for randomization, polyrhythmic sequencing, and more, the Varigate can produce standard beats or immensely detailed, complex rhythmic structures. The 2hp Seq offers melodic sequencing, while the WMD / SSF Modbox provides two functionally distinct LFOs, a noise source, and a sample & hold for providing modulation and animation throughout your system.

PCA’s Rhythm Series Intermediate allows for nuanced control and intricate sound design, employing modules that excel at percussive sounds but are capable of a great deal more. With a drum machine-like format and extra space to grow, this system is ideal for anyone looking to get into Eurorack modular synthesis for the purpose of making rhythm-based music with edgy, progressive sound design.

Rhythm Series Intermediate System Features

  • Fully capable Eurorack modular groovebox with room to expand
  • Preassembled in Make Noise 104hp Powered Skiff
  • Includes 25 LMNTL patch cables and 2 LMNTL Splitter Hubs
  • Noise Engineering Basimilus Iteritas Alter additive drum synth voice
  • WMD Chimera metallic percussion voice
  • Intellijel Plonk physical modelling synth voice
  • Erica Synths Pico Drums dual one-shot sample player
  • Malekko Varigate 4+ for complex rhythmic and note sequencing
  • 2hp Seq for melodic sequencing
  • WMD/SSF Modbox dual LFO + noise + sample & hold
  • Pittsburgh Lifeforms 2+2 audio & CV mixer
  • Erica Pico Output for direct connection to headphones, recording gear, or live PA


  • 10x 6” LMNTL 3.5mm patch cables
  • 10x 12” LMNTL 3.5mm patch cables
  • 5x 24” LMNTL 3.5mm patch cables
  • 2x LMNTL splitter hubs
Perfect Circuit Systems Rhythm Series Intermediate System Reviews